Recess - LR

Axially extended recesses are formed on the inner circumference of the head, and the tightening driving angle is designed to be zero.


Maximum torque transmission is achieved from 0 degree driving angle design
Allows no cam-out of tightening tools
Preventing damage of recess of screws when tightening
Available high durability of tightening tools


Outstanding efficiency for tamper resistance by special tools
Most suitable for preventing cam-out trouble